Alternative standards for valves in gas or vapor service or in light liquid service - Percentage of valves allowed to leak

1. A remanufacturer or other person that stores or treats the hazardous secondary material subject to the requirements of section 33.1-24-02-187 may elect to have all valves within a hazardous secondary material management unit comply with an alternative standard that allows no greater than two percent of the valves to leak. 2. The following requirements must be met if a remanufacturer or other person that stores or treats the hazardous secondary material decides to comply with the alternative standard of allowing two percent of valves to leak: a. A performance test as specified in subsection 3 must be conducted initially upon designation, annually, and at other times requested by the department. b. If a valve leak is detected, it must be repaired in accordance with subsections 4 and 5 of section 33.1-24-02-187. 3. Performance tests must be conducted in the following manner: a. All valves subject to the requirements in section 33.1-24-02-187 within the hazardous secondary material management unit must be monitored within one week by the methods specified in subsection 2 of section 33.1-24-02-193. b. If an instrument reading of ten thousand parts per million or greater is measured, a leak is detected. c. The leak percentage must be determined by dividing the number of valves subject to the requirements in section 33.1-24-02-187 for which leaks are detected by the total number of valves subject to the requirements in section 33.1-24-02-187 within the hazardous secondary material management unit.